TWSBI ECO Fountain Pen - Transparent Yellow
The TWSBI ECO fountain pen boasts an incredible value with its piston filling system and affordable price. Like many other TWSBI fountain pens, this special edition ECO features a crystal clear acrylic barrel so you can see your ink level, and a translucent yellow cap and piston knob. The pen cap has an inner cap to ensure a perfect seal when stored away. It is completed with silver trim and a silver stainless steel nib. This color is a limited production run.
TWSBI’s belief is that it is important to allow the user to disassemble and reassemble the pen and completely experience the traditional aspects of owning and using a fountain pen. These pens also come packaged with a wrench and silicone grease. Neither of these accessories are intended to be used immediately, as they are for long-term care and maintenance. Additionally, please use extra care if you choose to disassemble the nib and feed, as the feed is very fragile.
- Condition
- New
- Brand
- TWSBI
- Type
- Fountain Pens
- Color
- Clear, Yellow
- Demonstrator
Whether or not the barrel of the pen is translucent, allowing you to see the ink and filling mechanism inside.
- Yes
- Body Material
- Resin
- Cap Rotations
For pens with a screw-cap closure, how many rotations it takes to uncap/recap the pen.
- 1
- Cap Type
How the cap is opened/closed from the barrel of the pen. Some common options include Snap-Cap, Screw-Cap, Magnetic Cap, or Capless (no cap).
- Screw-cap
- Compatible inks & refills
Which ink this pen will accept. Choices include bottled ink and various styles of pre-filled ink cartridges.
- Bottled ink
- Filling Mechanism
How the pen fills with ink. Click here to watch our video tutorial on common filling mechanisms.
- Piston
- Grip Material
- Resin
- Nib Size
- Extra-Fine, Fine, Medium, Broad, 1.1mm Stub
- Nib Color
- Silver
- Nib Material
- Steel
- Postable
Whether or not the cap fits securely onto the back of the barrel when open.
- Yes
- Retractable
Whether or not the nib/tip can retract into the body of the pen (usually for click or twist-open style pens).
- No
- Diameter - Body
- 12.8mm (0.50in)
- Diameter - Cap (without clip)
- 14.9mm (0.59in)
- Diameter - Cap (with clip)
- 17.3mm (0.68in)
- Diameter - Grip (mm)
Measured from the place most people choose to rest their fingers, which varies with each pen.
- 9.1mm
- Length - Body
The measurement from the back end of the barrel to the tip of the nib.
- 131.6mm (5.18in)
- Length - Cap
- 60.4mm (2.38in)
- Length - Nib
The measured length of the visible portion of the nib when it is installed in the pen, from grip to tip.
- 18.5mm (0.73in)
- Length - Overall (Closed)
- 138.8mm (5.46in)
- Length - Overall (Posted)
When the cap of the pen is posted onto the back of the pen body, this is the measurement of the entire pen including the nib.
- 167.5mm (6.59in)
- Weight - Body
If a converter is included with the pen, this weight is reflected in the total.
- 13g (0.46oz)
- Weight - Cap
- 8g (0.28oz)
- Weight - Overall (g)
- 21.0g
- Max Ink Capacity - Piston Vac
The maximum volume of ink that can fit in the pen when using the built-in piston or vacuum filling mechanism.
- 1.76ml
Customer Reviews
I was unsure of the color until I had it in my hand. Love it. The Medium nib is a very smooth writer which lays down just the right amount of ink. Sure wish i could find a transparent green now.
I was looking for the stub nib on TWSBI pens to be a little calligraphic, but it's just as broad as their broad nib. (~Which I'm finding definitely too broad!) I much prefer the small Pilot Prera FP's with their amazing CM nibs. ~Will not order any more TWSBI pens..
I didn't know what to expect when I purchased this pen. Having used gold nib pens mostly over the years, I was willing to make the $32 investment. I have not been disappointed in the least. Super reliable, good build quality and a heck of a value for the money. Being a steel nib (medium) it is not bouncy but overall, very impressed with this pen! Now I understand why TWSBI is such a popular brand
For daily use I choose Lamy in case any of the pens get 'lost' at work. This appears to be a good alternative with its 'fun vibe' and user friendliness.
I love TWSBI pens but I usually prefer the 580s -- this is my first ECO. I expected it would be 'lesser' in many ways, but I am pleasantly surprised at how great it is. I selected the broad nib and I'm very pleased with the smoothness and flow of the pen. Paired with Diamine Oxford Blue, it makes my signature look great, even on 20lb copy paper.
